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RadiAnt DICOM Viewer


Basic Functionality

Desktop application for installation on PCs, laptops, and tablets running Windows systems

Windows 7/8/8.1/10/11 supported

Native ARM 64-bit version for the new generation of Windows on ARM devices (e.g., Surface Pro X)

No additional dependencies (.NET, Java, etc.)

Lightweight, compact application1

Excellent performance with 32- and 64-bit versions that are both optimized for multi-core processors

Asynchronous reading (you can browse images as they are being opened)

Advanced memory management system that facilitates the concurrent opening of studies that contain thousands of images

Supported DICOM Formats

Files from different imaging modalities: CR, DX, MG, CT, MR, PT, US, XA, NM, SC, SR

Monochromatic images (e.g., CR, CT, MR)

Color images (e.g., US, 3D reconstructions)

Static images (e.g., CR, MG, CT)

Dynamic sequences (e.g., XA, US)

Uncompressed images (little endian/big endian, implicit/explicit VR)

Compressed images (RLE, JPEG Lossy, JPEG Lossless, JPEG 2000, JPEG-LS)

Structured reports

Encapsulated PDF documents


Access DICOM Studies

Open DICOM studies from CD/DVD/Blu-ray discs

Open DICOM studies from local and network folders

Open DICOM studies from USB drives

Open ZIP archives (unencrypted/encrypted) with DICOM files

Search and download DICOM studies (or selected series) from PACS locations (servers, workstations, modalities)

Accept and display studies pushed from other PACS locations

Local Archive

Store DICOM studies in a local database

Import DICOM studies from CD/DVD/Blu-ray discs

Import DICOM studies from local and network folders

Import DICOM studies from USB drives

Import ZIP archives (unencrypted/encrypted) with DICOM files

Import DICOM studies from PACS locations

Organize study collection using keywords

Multiple databases supported

Export list of studies to CSV file

Export Images

Export DICOM files to JPEG/BMP images

Export DICOM files to MP4/WMV movies

Export DICOM files in original format2

Copy displayed image to Windows Clipboard

Send studies to PACS locations3

Basic Tools

Perform fluid zooming

Perform fluid panning

Adjust brightness and contrast (window level/window width)

Negative mode

Apply window presets for computed tomography (lung, bone, etc.)

Apply precise window values (with SUVbw support for PET series)

Add your own window presets

Rotate (90 CW, 90 CCW, 180)

Flip (horizontal, vertical)

Apply image filters (sharpen, smooth, edge, emboss)

Display dynamic series/sequences (CINE) with option to adjust frames per second

Display DICOM overlays (annotations or graphic overlays included in the file)

Display DICOM file structure with searchable DICOM tags, their descriptions and values


Measurement of segment length

Manual calibration of length measurements

Support for calibrated regions in ultrasound images

Measurement of mean, minimum and maximum parameter values (e.g. density in Hounsfield Units in computed tomography, SUVbw in PET) within circle/ellipse and its area

Measurement of area and perimeter of a closed polygon

Measurement of open polygon length

Measurement of angle value

Measurement of Cobb angle value

Measurement of deviation distance

Arrow tool for annotations

Pencil tool for freehand drawing

Compare Series

Compare multiple series in the same or different windows

Automatic synchronization between series with images acquired in the same plane (e.g., computed tomography series before and after contrast media administration)4

Manual synchronization between series from different studies that have a similar patient orientation

Cross-reference lines in series with different image planes (e.g., magnetic resonance study)4

3D cursor tool

Split multi-sequence series into separate panels

Advanced Tools

2D MPR (orthogonal multiplanar reconstructions)

Fusion of series with different modalities (e.g., PET-CT) or with different protocols (e.g., MR T1/T2 – DWI)

Time-intensity curves (TIC, e.g., for breast MRI)

3D MPR (oblique multiplanar reconstruction) with MIP (maximum intensity projection), MinIP (minimum intensity projection) and Avg (average) modes

3D VR (volume rendering)

3D snapshots for quick saving and restoring 3D VR views

Creation of quick movies (simple rotations) and advanced 3D snapshot-based videos with volume-rendered objects

Export 3D models to STL files

GPU acceleration for 3D VR and 3D MPR/MIP5

DSA mode (digital subtraction angiography) with auto and manual pixel-shift, split mask and magic mask


A simple and intuitive interface with full-screen and distraction-free modes

Multi-touch support for Windows 8/8.1/10/11 touch-enabled devices

Multilingual interface—more than 30 translations available6

Customizable keyboard shortcuts

Integration with third-party systems via command-line arguments and the radiant:// URL protocol


1 The installer size of RadiAnt DICOM Viewer is 7MB; the disk space occupied after installation is 10MB.

2 It is not possible to export secondary images obtained using Multiplanar Reconstructions (MPR), 3D Volume Rendering, Fusion, or Time-intensity Curve (TIC) tools to DICOM files.

3 Available with the DCMTK add-on package installed.

4 The series have to belong to the same study.

5 Only available with the 64-bit version of RadiAnt DICOM Viewer. Supported NVIDIA graphics card required.

6 RadiAnt DICOM Viewer and RadiAnt DICOM Viewer CD/DVD are distributed with English and Polish language support. Other translations (Arabic, Brazilian Portuguese, Bulgarian, Chinese, Chinese [Taiwan], Croatian, Czech, Danish, Dutch/Flemish, French, German, Greek, Hungarian, Indonesian, Italian, Japanese, Korean, Mongolian, Norwegian, Persian, Portuguese, Romanian, Russian, Serbian, Slovak, Spanish, Swedish, Turkish, Ukrainian) have been created by the community and are available for download from Not all translations have been updated for the newest version of the viewer.